Plan 9 from Bell Labs’s /usr/web/sources/contrib/quanstro/root/sys/src/fs/port/mkfile
PORTFILES=`{builtin cd ../port;echo *.c | sed 's/ /|/g; s/\.c//g'} ^($PORTFILES)\.$O:R: '../port/\1.c' $CC $CFLAGS -I. ../port/$stem1.c time.$O: timezone.h mkfile timezone.h:D: mkfile ../fs64/tzgen $ZONE > timezone.h